The Westcott Fast Flags 18" x 24" Black Block is a separate sheet that you can use with the separately sold Westcott Fast Flags 18" x 24" Collapsible Frame.
The Black Block Fast Flag is easy to mount on the collapsible frame and to remove from the frame. This is due to the clever design with a liner and sturdy Velcro strap. The Westcott Fast Flag Black Block can be used for various purposes. Place your subject in the shade, shield your subject from unwanted stray light or use the Black Block to shape the light. You are in complete control! The Westcott cloth is also made of high quality and heavy fabric for optimal light blocking.
What are Flags used for?
Flags are used to block stray light or reflection. A Black Block blocks 100% of the light, a Double Black Net blocks 1 1/4 stops and a Single Black Net blocks 3/4 stop.